<!DOCTYPE html>
<html lang="en">
	<head>
		<meta charset="UTF-8" />
		<meta http-equiv="X-UA-Compatible" content="IE=edge" />
		<meta name="viewport" content="width=device-width, initial-scale=1.0" />
		<title>configurable</title>
	</head>
	<body>
		<script>
			let obj = {}
			Object.defineProperty(obj, 'age', {
				get() {
					console.log('get ');
					return 18
				},
				set(newValue) {
					console.log('set :',newValue);
				},
			})
		</script>
	</body>
</html>
